User's Manual

SIM548C EVB User Guide
SIM548C-EVB_ UGD _V1.01 04.05.2008
10
Headset interface:
Pin Signal I/O Description
1 MIC1P I Positive microphone input
2 SPK1P O Positive microphone input
3 SPK1N O Negative microphone input
4 MIC1N I Negative microphone input
Headphone interface:
Pin Signal Input/Output Description
5 MIC2P&SPK2P I/O Auxiliary positive input and output
3.3 SIM card interface
Figure 6: SIM card interface
Note: Please refer to SIM548C User Guide, detailed in Chapter 3.11 SIM interface.